Sewing-machine guide.



PATENTED 11130.6, 1904..

G. G. PERRY.

SEWING MACHINE GUIDE.

APPLIGATION FILED MAY 11. 1904.

H0 MODEL.

Fig. 5

.[NVENTOJT 021 0:: C" FE'I J Y WITNEQSJEJ off/004% UNTTED STATESPatented. December 6, 1904.

PATENT OFFICE.

GEORGE (J. PERRY, OF WHITESBORO, NEW YORK, ASSIG-NOR OF ONE-HALF TOCHARLES A. POWELL, OF WHITESBORO, NEW YORK.

SEWING-MACHINE GUIDE.

SPECIFICATION forming part of Letters Patent No. 776,683, dated December6, 1904.

Application filed May 11, 1904.

To all w/tom it may concern.-

Be it known that I, GEORGE O. PERRY, a citizen of the United States,residing at VVhiteshero, in the county of Oneida and State of New 5York, have invented certain new and useful Improvements inSewing-Machine Guides, of which the following is a specification,reference being had therein to the accompanying drawings.

My invention consists in an attachment for a sewing-machine; and Ideclare that the following is a full, clear, concise, and exactdescription thereof, sufiicient to enable one skilled in the art to makeand use the same, reference being bad to the accompanying drawings, inwhich like numerals and letters refer to like parts throughout.

My invention relates particularly to that class of sewing-machines whichhave cylindrical bed-plates and are used in placing overstitching ontheconnected edges of material, especially underwear. The pieces whichcompose such a garment after being cut out are sewed together at theedges to be connected, which, however, leaves a ridge when the garmentis opened out. Machines are used for placing stitches over this ridge,so as to perfeet the finish of the garment. To do this, the articles arepassed through a machine the 3 shank or bed-plate of which is in manyinstances cylindrical in form; otherwise the structure of the machine isfamiliar to one skilled in the art, comprising, as is customary, apresser-foot and needle-bar and having in the shank the necessarycooperating parts to form the stitch.

Figure l is a side view of such a machine, showing the location of mydevice. Fig. 2 is an end view of the device. Fig. 3 is a perspec tiveview. Fig. 4 is a side view having one of the cap parts broken away andindicating certain other parts. Fig. 5 is a top view.

Referring to the figures more in detail, A represents the gooseneck ofan ordinary machine, and B the cylindrical bed-plate or shank. Cindicates a presser-bar, and D the presserfoot, while E represents theneedle-bar, which carries the needles 6. The upper surface of thecylindrical bed-plate or shank carries the with prongs 3 Serial No.207,357. (Nomodeh) throat-plate l, which is suitably secured there- 5 toand lies under the presser-foot and needlebar and has the necessaryopenings for the operation of the feeding and stitching means andprojects slightly beyond the end of the shank itself. A cap is providedto be mounted on the end of the shank and engage or register with theedge of the throat-plate. The ordinary function of this cap is toprotect the inclosed parts of the machine and to complete the structureof the work-plate. In oporation the material is fed by hand over the endof this cap onto the throat-plate, the cap and throat-plate being of alevel. lt has been found that unless great care is exercised in feedinga machine the hand of the operator 5 will not be held exactly in properposition to feed the material exactly in the line for proper work. Ifthe hand be moved to one side or below, as is natural when the attentionis diverted from the work, the stitches will not 7 cover the edge to beoverstitched, but the edge will pass to one side or the other of theneedles. The smooth symmetrical periphery of the usual cap makes it easyfor the work to slip from the end of the cap if the hand drops evenslightly below the horizontal line of the throat-plate. In order toremedy this defect, ll form the cap 2 of a particular shape, asindicated in the drawings. It is provided 3, which are inserted in re-30 cesses provided in the shank for that purpose. At the upper edge ofthe cap, at its end, 1 enlarge it, so that the radius of the uppersector or portion is longer than that of the other part of thecross-section, and through this en- 5 larged portion I cut a groove 5,leaving the nubs 6 6 on either side. It will be understood that thisconstruction may be made by added parts, although in my illustration thecap and the projections are integral. The bottom of 9 the groove 5 atits inner end is on the same line or level as the throat-plate. At itsinner end it is terminated abruptly by the inner vertical Wall 6 of thecap. From its inner end the groove flares or enlarges downwardly 9 5 andoutwardly and forms the upwardly and inwardly converging curved sidewalls or edges 5 which extend down on the end or vertical face of thecap and across the top or horizontal portion of the cap in front of theplate 1. The bottom of the groove is sloped downwardly, as indicated at5, so that I have an opening with three converging sides and whichinclose a guideway at their inner part leading to the level of the shankor plate. The floor or bottom 5 of the groove also curves and enlargesoutwardly and downwardly across the top portion of the cap and extendsdown at the end or vertical face of the cap. The nubs 6 6 riseasubstantial distance above the bottom of groove 5, so that the work,which is in form of what may be called a ridge or strip with the edgedownward, is naturally fed through the opening 5 to the operating partseven if the careless operator moves the hand to one side or the other orpermits it to fall below the line of the work, the curves of the openingbeing such that the ridge cannot pass out of the opening, but isconfined in its proper course, the lines 7 7 (shown in Fig. 2)indicating the limits to the outer entrance to the groove with the wallreceding on either side. The purpose and effect of this construction isto keep the work in proper feeding line, the walls of the openingconfining it and turning it from the hand of the operator into properalinement with the needles, and by the employment of shank-caps,constructed as herein described, it is found that the tendency whichheretofore existed of the work to slip off from the cap and away fromthe needles has been obviated, and it has been found by the use of mycap that perfect work may be done even though the operator becamenegligent or the attention be diverted. The cap is corrugated orroughened on the sides, as at 8, for convenience in removing it.

Having described my invention, What I claim as new, and desire to secureby Letters Patent, is-

1. In a sewing-machine, in combination, a throat-plate, and a shankhaving an end cap provided with upwardly projecting nubs above the planeof and in advance of said plate and forming a guide-groove open at therear end and extending forward from said plate parallel with thelongitudinal axis of said cap and flaring and extending downwardly atthe front end, substantially as described.

2. A cap for the shank of a sewing-machine of the charactersubstantially as described, having a pair of upwardly-projecting nubsforming a guide-groove open at its rear end and extending forward of thecap parallel with its longitudinal axis, said cap on its front facehaving upwardly-converging guide edges merging into said nubs andforming a flaring guide on the front face of the cap.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE C. PERRY. Witnesses:

E. T. DE GIoRGI, H. W. MARTIN.

